From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Record of a telephone conversation with Captain Briggs regarding the supply of relief valves for air pumps.
| Identifier | ExFiles\Box 37\4\ scan 089 | |
| Date | 10th July 1917 | |
| To OY1/BIO.7.17. X.3099 July 10th 1917. To R.{Sir Henry Royce} from Oy. c. to By.{R.W. Bailey - Chief Engineer} c. to EH. c. to EP.{G. Eric Platford - Chief Quality Engineer} X.3110 X.3099 Conversation with Captain Briggs (by 'phone) 10.7.17. Captain Briggs has placed the question of the altered design of air pump before the Air Board, and they have agreed to our proceeding with this pump. Captain Briggs was under the impression that we desired to supply a relief valve. I have pointed out to him that the trouble with this was that with a multiple tank scheme a number of relief valves are necessary, and that therefore we prefer not to supply a relief valve but to trust to that of the aeroplane makers. He says that the trouble with air pressure systems in the past has been almost entirely trouble with the relief valves fitted by the aeroplane makers. He believed there was a good relief valve which they were experimenting with at the moment, called I think, the Holland, but the general valve fitted by the planemakers is not satisfactory. Therefore, they think that we should supply a relief valve. Then I took up the question of whether we should supply one relief valve per engine, or whether we should supply relief valves to separate orders as an entirely separate line from the engines, and Captain Briggs said that he thought we should supply one relief valve per engine, which would be fitted at the extreme "tank" end of the air pipe from the pump to the tank. In the case of a multiple tank scheme the aeroplane makers would probably fit their own relief valves in addition, or they might purchase relief valves from us, but in any case we should have at least one reliable valve on the | ||